US6751742B1 - System for responding to a power saving mode and method thereof - Google Patents
System for responding to a power saving mode and method thereof Download PDFInfo
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- US6751742B1 US6751742B1 US09/387,535 US38753599A US6751742B1 US 6751742 B1 US6751742 B1 US 6751742B1 US 38753599 A US38753599 A US 38753599A US 6751742 B1 US6751742 B1 US 6751742B1
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- mode
- state
- application
- state indicator
- power
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
Definitions
- the present invention relates generally to computer systems, and more specifically to a system for responding to a power saving mode.
- power saving modes including a power down mode of operation. Such an operation may be executed at the request of a user, a timing device, or any other means capable of requesting a low power mode.
- the low power request is generally handled by the computer's operating system. However, it is generally desirable to gracefully enter low power mode in order to avoid terminating applications abruptly, whereby information would be lost.
- the operating system checks with each of the open applications prior to performing a low power operation. Generally, an operating system will issue a suspend request to each open application in order to determine whether or not it is permissible to stop the applications operation.
- an application Upon receiving a suspend, or low power operation request, an application will respond in one of two manners.
- a first manner a fixed response is provided to the operating system.
- the application can be written such that any suspend request by the operating system will be accepted or denied.
- the suspend operation request results in a query to the user to determine how to respond to the system.
- the query is in the form of a dialog box, whereby a user is asked to indicate whether or not to continue operation of the present application.
- FIG. 1 illustrates a block diagram representing various layers of code typically stored with a memory associated with a computer system
- FIG. 2 illustrates a method in accordance with the present invention
- FIG. 3 illustrates a method in accordance with the present invention
- FIG. 4 illustrates a table of application and state examples and a table of responses
- FIG. 5 illustrates a block diagram representing various layers of code typically stored within a memory associated with the computer system
- FIG. 6 illustrates a system capable of implementing the present invention.
- the present invention responds to a low power operation or request, such as a suspend operation notice, based upon the current state of an application receiving the suspend notice. Based upon the application state, an appropriate response is provided to the system. In another embodiment, the response to the suspend request is based upon states of two or more applications.
- FIG. 1 is a block diagram illustrating layers of code typically utilized by a host computer when interfacing to applications.
- An operating system labeled O/S represents any of a number of commercially or proprietary operating systems capable of executing applications. Examples of such operating systems include UNIX, Microsoft products such as Windows 95, Windows 98, as well as the various operating systems provided by Apple Computer.
- the O/S interfaces at a lower level with the microcode of a specific hardware processor (not illustrated).
- the O/S interfaces to an application interface layer (API) which provides midlevel functionality support between the operating system and applications. Illustrated in FIG. 1 as the top layer, is an application layer.
- the application layer is where applications reside, for example applications 110 and 120 .
- the layers of code illustrated in FIG. 1 represent a simplification.
- multiple API layers may be implemented, as well as varying layers of support below the O/S.
- the API can act as a general interface between the operating system and the application layer.
- the power mode indicators 140 of FIG. 1 the operating system can provide requests and information directly to the applications residing at the application layer.
- a state indicator associated with a specific application 110 is set to a specific state.
- application 110 of FIG. 1 is a Digital Video Disk (DVD) multimedia application capable of displaying DVD images
- the DVD application can have a plurality of state indicators including a state for indicating the application is currently in a stop mode and/or a paused mode.
- DVD Digital Video Disk
- the state indicator is set to a second state at a second period of time.
- the state indicator may be changed from indicating a stop mode to a play mode to indicate the application is playing video and/or audio stored upon the DVD.
- step 203 a determination is made whether or not a indication of a power management event, or a power mode indicator request has been received. If no request has been received, flow proceeds to step 210 , and normal operation resumes. From step 210 , the flow would proceed back to step 203 where a query continues to determine whether or not a power event management request has occurred.
- a query continues to determine whether or not a power event management request has occurred.
- the step 203 can actually represent an interrupt driven step.
- step 220 the application will respond to the power mode indicator request based upon the second state. In other words, the first state associated with the DVD disk has no effect upon the response provided to the power mode indicator.
- step 221 specific power mode instructions can be executed prior returning to a normal flow prior to step 203 . It should be understood that the power mode instructions of step 221 are optional and/or can be executed before step 220 . However, where it would be desirable for the application to perform some events prior to returning to normal operation, the power mode instructions 221 can be used to implement such events. For example, the step 221 can be used to shut down or open files of the application.
- the method of FIG. 2 represents an advantage over the prior art, in that it allows for specific responses to the power mode indicator to be based upon one of a plurality of possible application states. In the prior art, the responses were fixed, and were not based upon specific states associated with the application.
- the power mode indicator 140 is received by the application 110 , where the application 110 , based upon its current state, will provide a response 150 to the operating system. It should be understood, that the operating system can interface with the application 110 through the API layer or directly.
- FIG. 3 illustrates another method in accordance with the present invention.
- a first state indicator for a specific application is set to one of a first state and a second state.
- application 110 is assumed to be a DVD application.
- the first state indicator of step 301 of FIG. 3 can be used to indicate whether or not the DVD application is currently in a stopped mode or a playback mode.
- a second state indicator associated with a second computer application is set to one of a third state and a fourth state.
- the second computer application is the application 120 .
- the application 120 is an application for providing an active video feed into a window associated with the application 120 .
- the second state indicator is for indicating whether or not the audio portion of application 120 is muted.
- a power mode indicator request would be a suspend O/S operation, which is a type of power mode indicator request indicating that the O/S wants to suspend operations, presumably to power down the system. If a power mode indicator request has not been received, the system continues in normal operation at step 310 and from 310 will continue to query whether or not a power mode indicator request has been received. In the event that a power mode indicator request has been received flow will continue to step 320 .
- a first state for the DVD application is stop mode.
- the second state indicator indicates a third state, such as a mute operation
- the flow will proceed to step 331 .
- a first power mode response is provided. For example, where the DVD application 110 is in a step mode, and the active video mode of application 120 is a mute mode, the power response of step 331 responds to the system that it is okay to suspend operation.
- step 330 when a determination s made that the application 120 is in a fourth state, such as an active video state whereby the video and associated audio is being played (i.e. not muted), the flow proceeds to step 332 .
- a second power mode response is provided to the system. For example, where the DVD application 110 is in a stop mode, and the video playback application 120 is playing active video, the response back to the system can either accept or reject the suspend request.
- the step 332 it is possible for the step 332 to provide a dialog request box to the user asking the user whether or not the user wishes to suspend operation. If the user does not respond within a certain amount of time, an assumption can be made that it is okay to suspend the operation.
- step 320 If at step 320 , a determination is made that the DVD application 110 is currently in a second state, such as a playback mode, the flow proceeds to step 340 .
- step 340 a determination is made whether or not the second state indicator is in a third state or a fourth state.
- the flow proceeds to step 341 .
- the response to step 341 can be based upon the fact that the DVD application is in a play mode, while the active video application 120 is muted. This step can be handled in the same manner as step 332 , or in a different manner. For example, a response can be such that it would allow the DVD playback to complete prior to responding to the O/S suspend request.
- step 340 If at step 340 , it is determined that the second state indicator indicates a fourth state, the flow proceeds to step 342 .
- the DVD application 110 would be in a play mode, while the active video application 120 will also be in a play mode. Because multiple multimedia applications are currently active, a determination can be made to not allow the operation suspend request to occur. Or likewise, a determination could be made to allow the request to proceed.
- Bi-directional arrow 130 of FIG. 1 represents a communication channel between applications 110 and 120 allowing each application to have visibility into the other application state. This visibility can be accomplished by transmitting specific state information from one application to another, possible through the API, or other system resources, to the other application in order for the other state to monitored as needed. By allowing for this type of, communication, it is possible to make power down decisions based upon states of more than one application.
- the specific responses of steps 331 , 332 , 341 , and 342 can be predefined responses associated with the application, or they could be responses which are capable of being set within a user preference table.
- a user preference table could be used to indicate how a particular user wants a DVD application to respond based upon power management requests. In this manner, it possible for one user to specify an application to respond in a specific manner, while another user would set it to respond in a different manner for the same event.
- FIG. 4 illustrates a table of state and application examples, and responses to specific power management requests.
- Examples of various applications in table 410 include full motion video applications, such as television, DVD, and VCRs.
- Possible states for theses and other applications include an in-focus state indicating whether or not a current application is actually the top window capable of being viewed by the user, a recording state, mute state, closed caption state, channel surfing state, and a multi-display state. Based upon the combinations of these and other states, it is possible to provide a response. Examples of possible responses are illustrated in table 420 of FIG. 4, which include an accept power mode request, reject power mode request, wait or delay power mode request, or perform some action.
- FIG. 5 illustrates another method of allowing visibility among applications.
- FIG. 5 is representative of the layers of code of FIG. 1, however a common resource 505 has been provided at the application layer.
- the common resource 505 provides an application interface type layer between the O/S and the individual applications 110 and 120 .
- the common resource 505 In this manner, it is possible for the common resource 505 to maintain visibility as to the states of the applications 110 and 120 .
- the applications 110 and 120 signal the common resource 505 when specific states have changed.
- the O/S is allowed to send a single power mode indicator 140 to the common resource 505 .
- the common resource 505 can provide the response back to the operating system indicating how to proceed with the power mode request.
- FIG. 6 illustrates a computer system 600 capable of implementing the present invention.
- FIG. 6 illustrates a data processing system 600 , such as may be used to implement the present invention and can be used to implement the various methodologies or incorporate the various hardware disclosed herein.
- FIG. 6 illustrates a general purpose computer 600 , that includes a central processing unit (CPU) 610 , which may be a conventional or proprietary data processor, and a number of other units interconnected via system bus 602 .
- CPU central processing unit
- the other portions of the general purpose computer include random access memory 612 read only memory 614 , input output adapter 620 for connecting peripheral devices, the user interface adapter 620 for connecting user interface devices, a communication adapter 624 for connecting the system 600 to a data processor network, and a video graphic controller for displaying video and graphic information.
- the IO adapter 622 is further connected to disk drives 647 , printers 645 , removable storage devices 646 , and tape units (not shown) to bus 602 .
- Other storage devices may also be interfaced to the bus 602 through the IO adapter 622 .
- the user interface adapter 620 is connected to a keyboard device 641 and a mouse 640 .
- Other user interface devices such as a touch screen device (not shown) may also be coupled to the system bus 602 through the user interface adapter 620 .
- the video/graphics controller 626 is connected to a display device 660 .
- the video graphic controller 626 can be connected to a plurality of other multimedia devices, such as a DVD player, a VCR, a home stereo theater, as well as an array of audio processing devices.
- the video graphics controller 626 can be representative of a plurality of video graphics controllers.
- the application programs described with reference to FIG. 1 and the methods described herein are generally stored within the disk drive 647 , and executed from a RAM 612 .
- the computer instructions capable of implementing the specific method embodiments described herein can be stored upon removable storage devices 646 , on the disk drive 647 , or stored on off-site locations and transmitted to the system 600 via the modem 651 , or bridge 650 through the communications interface adapter 624 .
- the instructions may be stored in memory, such as the random access memory.
- the memories having the corresponding instructions may be embedded within the circuitry comprising one of a state machine or other logic circuitry, or may be unnecessary because the function is performed using combinational logic.
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US09/387,535 US6751742B1 (en) | 1999-08-31 | 1999-08-31 | System for responding to a power saving mode and method thereof |
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US09/387,535 US6751742B1 (en) | 1999-08-31 | 1999-08-31 | System for responding to a power saving mode and method thereof |
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Cited By (17)
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US20030005011A1 (en) * | 2001-06-01 | 2003-01-02 | John Elliott | Sticky z bit |
US20040034803A1 (en) * | 2002-08-14 | 2004-02-19 | Hamilton Tony G. | Method and apparatus for a computing system having an active sleep mode |
US20040034802A1 (en) * | 2002-08-14 | 2004-02-19 | Hamilton Tony G. | Method and apparatus for a computing system having an active sleep mode CPU that uses the cache of a normal active mode CPU |
US20040081045A1 (en) * | 2002-10-25 | 2004-04-29 | Youjip Won | Method and device for retrieving data in low-power |
US20040128382A1 (en) * | 2002-12-31 | 2004-07-01 | Marion Shimoda | Method and apparatus for adjusting resource availability based on power availability |
US20040162922A1 (en) * | 2003-02-14 | 2004-08-19 | Kardach James P. | Non main CPU/OS based operational environment |
US20040163004A1 (en) * | 2003-02-14 | 2004-08-19 | James Kardach | Method and apparatus for a user to interface with a mobile computing device |
US20060036887A1 (en) * | 2003-02-14 | 2006-02-16 | Kardach James P | Computing system with operational low power states |
US7020788B2 (en) * | 2001-06-01 | 2006-03-28 | Microchip Technology Incorporated | Reduced power option |
US20060273161A1 (en) * | 2004-04-30 | 2006-12-07 | Little Herbert A | Content protection ticket system and method |
EP1993273A1 (en) * | 2006-03-03 | 2008-11-19 | NEC Corporation | Mobile telephone and application program |
US20090100279A1 (en) * | 2007-10-11 | 2009-04-16 | Lg Electronics Inc. | Computer providing motion picture mode and method of setting up system-mode while playing motion pictures |
US7725748B1 (en) | 2000-12-29 | 2010-05-25 | Intel Corporation | Low power subsystem for portable computers |
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TWI489263B (en) * | 2012-09-04 | 2015-06-21 | Pegatron Corp | Power manage method and system thereof |
US20150181524A1 (en) * | 2004-09-07 | 2015-06-25 | Broadcom Corporation | Low power mode management |
US10417453B2 (en) * | 2015-12-14 | 2019-09-17 | Cryptography Research, Inc. | Preemption of a container in a secure computation environment |
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US7725748B1 (en) | 2000-12-29 | 2010-05-25 | Intel Corporation | Low power subsystem for portable computers |
US7966480B2 (en) | 2001-06-01 | 2011-06-21 | Microchip Technology Incorporated | Register pointer trap to prevent errors due to an invalid pointer value in a register |
US20030005011A1 (en) * | 2001-06-01 | 2003-01-02 | John Elliott | Sticky z bit |
US7020788B2 (en) * | 2001-06-01 | 2006-03-28 | Microchip Technology Incorporated | Reduced power option |
US7058829B2 (en) | 2002-08-14 | 2006-06-06 | Intel Corporation | Method and apparatus for a computing system having an active sleep mode CPU that uses the cache of a normal active mode CPU |
US8301916B2 (en) | 2002-08-14 | 2012-10-30 | Intel Corporation | Method and apparatus for a computing system having an active sleep mode CPU that uses the cache of a normal active mode CPU |
US20100250989A1 (en) * | 2002-08-14 | 2010-09-30 | Hamilton Tony G | Method and apparatus for a computing system having an active sleep mode cpu that uses the cache of a normal active mode cpu |
US7117379B2 (en) | 2002-08-14 | 2006-10-03 | Intel Corporation | Method and apparatus for a computing system having an active sleep mode |
US7734936B2 (en) | 2002-08-14 | 2010-06-08 | Intel Corporation | Method and apparatus for a computing system having an active sleep mode CPU that uses the cache of a normal active mode CPU |
US20040034802A1 (en) * | 2002-08-14 | 2004-02-19 | Hamilton Tony G. | Method and apparatus for a computing system having an active sleep mode CPU that uses the cache of a normal active mode CPU |
US20040034803A1 (en) * | 2002-08-14 | 2004-02-19 | Hamilton Tony G. | Method and apparatus for a computing system having an active sleep mode |
US20060212733A1 (en) * | 2002-08-14 | 2006-09-21 | Hamilton Tony G | Method and apparatus for a computing system having an active sleep mode CPU that uses the Cache of a normal active mode CPU |
US20040081045A1 (en) * | 2002-10-25 | 2004-04-29 | Youjip Won | Method and device for retrieving data in low-power |
US20040128382A1 (en) * | 2002-12-31 | 2004-07-01 | Marion Shimoda | Method and apparatus for adjusting resource availability based on power availability |
US7080271B2 (en) * | 2003-02-14 | 2006-07-18 | Intel Corporation | Non main CPU/OS based operational environment |
US20090019185A1 (en) * | 2003-02-14 | 2009-01-15 | Kardach James P | Non Main CPU/OS Based Operational Environment |
US20040162922A1 (en) * | 2003-02-14 | 2004-08-19 | Kardach James P. | Non main CPU/OS based operational environment |
US7254730B2 (en) | 2003-02-14 | 2007-08-07 | Intel Corporation | Method and apparatus for a user to interface with a mobile computing device |
US7406610B2 (en) | 2003-02-14 | 2008-07-29 | Intel Corporation | Computing system with low power states and proxy for integration with legacy application software |
US7421597B2 (en) | 2003-02-14 | 2008-09-02 | Intel Corporation | Computing system with operational low power states |
US7428650B2 (en) | 2003-02-14 | 2008-09-23 | Intel Corporation | Non main CPU/OS based operational environment |
US9015511B2 (en) | 2003-02-14 | 2015-04-21 | Intel Corporation | Non main CPU/OS based operational environment |
US7114090B2 (en) | 2003-02-14 | 2006-09-26 | Intel Corporation | Computing system with operational low power states |
US8522063B2 (en) | 2003-02-14 | 2013-08-27 | Intel Corporation | Non main CPU/OS based operational environment |
US10078363B2 (en) | 2003-02-14 | 2018-09-18 | Intel Corporation | Non main CPU/OS based operational environment |
US20060206627A1 (en) * | 2003-02-14 | 2006-09-14 | Kardach James P | Non main CPU/OS based operational environment |
US20060143487A1 (en) * | 2003-02-14 | 2006-06-29 | Kardach James P | Computing system with operational low power states |
US20060036887A1 (en) * | 2003-02-14 | 2006-02-16 | Kardach James P | Computing system with operational low power states |
US20040163004A1 (en) * | 2003-02-14 | 2004-08-19 | James Kardach | Method and apparatus for a user to interface with a mobile computing device |
US9305562B2 (en) | 2003-02-14 | 2016-04-05 | Intel Corporation | Non main CPU/OS based operational environment |
US8166325B2 (en) | 2003-02-14 | 2012-04-24 | Intel Corporation | Non main CPU/OS based operational environment |
US20060273161A1 (en) * | 2004-04-30 | 2006-12-07 | Little Herbert A | Content protection ticket system and method |
US20150181524A1 (en) * | 2004-09-07 | 2015-06-25 | Broadcom Corporation | Low power mode management |
US10477474B2 (en) * | 2004-09-07 | 2019-11-12 | Avago Technologies International Sales Pte. Limited | Arbitrating a low power mode for multiple applications running on a device |
US20090011791A1 (en) * | 2006-03-03 | 2009-01-08 | Yuko Tashiro | Mobile Telephone and Application Program |
US8265713B2 (en) | 2006-03-03 | 2012-09-11 | Nec Corporation | System and method for adaptively handling software processing during power save mode operation in mobile terminals |
CN102307377A (en) * | 2006-03-03 | 2012-01-04 | 日本电气株式会社 | Mobile telephone and application program |
EP1993273A4 (en) * | 2006-03-03 | 2011-12-21 | Nec Corp | Mobile telephone and application program |
EP1993273A1 (en) * | 2006-03-03 | 2008-11-19 | NEC Corporation | Mobile telephone and application program |
US8751840B2 (en) * | 2007-10-11 | 2014-06-10 | Lg Electronics Inc. | Computer providing motion picture mode and method of setting up system-mode while playing motion pictures |
US20090100279A1 (en) * | 2007-10-11 | 2009-04-16 | Lg Electronics Inc. | Computer providing motion picture mode and method of setting up system-mode while playing motion pictures |
TWI489263B (en) * | 2012-09-04 | 2015-06-21 | Pegatron Corp | Power manage method and system thereof |
US10417453B2 (en) * | 2015-12-14 | 2019-09-17 | Cryptography Research, Inc. | Preemption of a container in a secure computation environment |
US11010494B2 (en) | 2015-12-14 | 2021-05-18 | Cryptography Research, Inc. | Preemption of a container in a secure computation environment |
US12050719B2 (en) | 2015-12-14 | 2024-07-30 | Cryptography Research, Inc. | Preemption of a container in a secure computation environment |
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